opencv 0.22.0

Rust bindings for OpenCV
Documentation 
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use std::ops::{Add, AddAssign, Div, DivAssign, Mul, MulAssign, Sub, SubAssign};

use num::{NumCast, ToPrimitive};

use crate::core::{Rect_, Size_, ValidRectType, ValidSizeType};

valid_types!(ValidPointType, i32, i64, f32, f64);

#[repr(C)]
#[derive(Copy, Clone, Debug, Default, PartialEq, PartialOrd)]
/// [docs.opencv.org](https://docs.opencv.org/master/db/d4e/classcv_1_1Point__.html)
pub struct Point_<T: ValidPointType> {
    pub x: T,
    pub y: T,
}

impl<T: ValidPointType> Point_<T> {
    #[inline]
    pub fn new(x: T, y: T) -> Self {
        Self { x, y }
    }

    #[inline]
    pub fn from_size(sz: Size_<T>) -> Self where T: ValidSizeType {
        Self { x: sz.width, y: sz.height }
    }

    #[inline]
    pub fn cross(self, pt: Point_<T>) -> f64 where f64: From<T> {
        let self_x: f64 = From::from(self.x);
        let self_y: f64 = From::from(self.y);
        let pt_x: f64 = From::from(pt.x);
        let pt_y: f64 = From::from(pt.y);
        self_x * pt_y - self_y * pt_x
    }

    #[inline]
    pub fn dot(self, pt: Point_<T>) -> T {
        self.x * pt.x + self.y * pt.y
    }

    #[inline]
    pub fn ddot(self, pt: Point_<T>) -> f64 where f64: From<T> {
        let self_x: f64 = From::from(self.x);
        let self_y: f64 = From::from(self.y);
        let pt_x: f64 = From::from(pt.x);
        let pt_y: f64 = From::from(pt.y);
        self_x * pt_x + self_y * pt_y
    }

    #[inline]
    pub fn inside(self, rect: Rect_<T>) -> bool where T: ValidRectType {
        rect.contains(self)
    }

    #[inline]
    pub fn norm(self) -> f64 where f64: From<T> {
        let self_x: f64 = From::from(self.x);
        let self_y: f64 = From::from(self.y);
        (self_x.powi(2) + self_y.powi(2)).sqrt()
    }

    #[inline]
    pub fn to<D: ValidPointType + NumCast>(self) -> Option<Point_<D>> where T: ToPrimitive {
        Some(Point_ { x: D::from(self.x)?, y: D::from(self.y)? })
    }
}

impl<T> Add for Point_<T>
    where
        T: ValidPointType + AddAssign,
{
    type Output = Point_<T>;

    fn add(mut self, rhs: Point_<T>) -> Self::Output {
        self += rhs;
        self
    }
}

impl<T> Sub for Point_<T>
    where
        T: ValidPointType + SubAssign,
{
    type Output = Point_<T>;

    fn sub(mut self, rhs: Point_<T>) -> Self::Output {
        self -= rhs;
        self
    }
}

impl<T> Mul<T> for Point_<T>
    where
        T: ValidPointType + MulAssign
{
    type Output = Point_<T>;

    fn mul(mut self, rhs: T) -> Self::Output {
        self *= rhs;
        self
    }
}

impl<T> Div<T> for Point_<T>
    where
        T: ValidPointType + DivAssign
{
    type Output = Point_<T>;

    fn div(mut self, rhs: T) -> Self::Output {
        self /= rhs;
        self
    }
}

impl<T> AddAssign for Point_<T>
    where
        T: ValidPointType + AddAssign,
{
    fn add_assign(&mut self, rhs: Point_<T>) {
        self.x += rhs.x;
        self.y += rhs.y;
    }
}

impl<T> SubAssign for Point_<T>
    where
        T: ValidPointType + SubAssign,
{
    fn sub_assign(&mut self, rhs: Point_<T>) {
        self.x -= rhs.x;
        self.y -= rhs.y;
    }
}

impl<T> MulAssign<T> for Point_<T>
    where
        T: ValidPointType + MulAssign
{
    fn mul_assign(&mut self, rhs: T) {
        self.x *= rhs;
        self.y *= rhs;
    }
}

impl<T> DivAssign<T> for Point_<T>
    where
        T: ValidPointType + DivAssign
{
    fn div_assign(&mut self, rhs: T) {
        self.x /= rhs;
        self.y /= rhs;
    }
}